IMPORTANT! This mask is Not NIOSH Approved. This Mask only helps keep certain non-harmful dusts and particles out of your lungs, nose and mouth. It will not protect from hazardous dusts like asbestos and silica or mold. While RZ Mask may help reduce inhalation exposures to certain airborne particles, RZ Mask is not designed or intended to protect against silica, asbestos or airborne biological particles such as mold and cannot eliminate the risk of contracting infection, illness, or disease. Click here for official test results!